Korean pojagi is a style of patchwork. It is not layered with batting and backing and quilted as American quilts are (although my American version was, and it was featured today on One Pretty Thing!). There are some great pictures of authentic pojagi online, but I've never found instructional materials in English. Please comment if you know of any.
I saw some amazing pojagi in Seoul this past March. Gorgeous stuff! It was very expensive though, so I didn't bring any home with me. What I can't figure out is how the seams are finished. They are often made of stiff linen and appear almost transluscent when hung in windows. From the back there are no raw edges. Here's a picture I took of some pojagi in a store window in Insadong in Seoul. I love the limited color palette and the use of solids only.